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BOUCHON CAOUTCHOUC PERFORE [1 record]

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Record 1 2001-03-15

English

Subject field(s)
  • Scientific Instruments
  • Equipment (Chemistry)
CONT

Experimental setup: 20 ml concentrated sulfuric acid and 40 ml formic acid are placed in a test tube. It is plugged with a perforated rubber stopper containing a bent glass tube.

OBS

For example: Solid, one-hole, two-hole rubber stoppers.

French

Domaine(s)
  • Instruments scientifiques
  • Équipement (Chimie)
CONT

Appareil pour le dosage de l'azote ammoniacal selon la technique analytique [...]. L'appareil est constitué par un récipient rodé de forme spéciale, muni d'un col latéral obturable, d'un tube de raccordement avec boule de sécurité et d'un tube perpendiculaire servant à l'introduction de l'air. Les tubes peuvent être raccordés au récipient au moyen d'un simple bouchon de caoutchouc perforé.

Spanish

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